German submarine U-177

History
Nazi Germany
Name:	U-177
Ordered:	28 May 1940
Builder:	DeSchiMAG AG Weser, Bremen
Yard number:	1017
Laid down:	25 November 1940
Launched:	1 October 1941
Commissioned:	14 March 1942
Fate:	Sunk, 6 February 1944 by a US aircraft
General characteristics
Class and type:	Type IXD2 submarine
Displacement:	1,610 t (1,580 long tons) surfaced 1,799 t (1,771 long tons) submerged
Length:	87.58 m (287 ft 4 in) o/a 68.50 m (224 ft 9 in) pressure hull
Beam:	7.50 m (24 ft 7 in) o/a 4.40 m (14 ft 5 in) pressure hull
Height:	10.20 m (33 ft 6 in)
Draught:	5.40 m (17 ft 9 in)
Installed power:	9,000 PS (6,620 kW; 8,880 bhp) (diesels) 1,000 PS (740 kW; 990 shp) (electric)
Propulsion:	2 shafts 2 × diesel engines 2 × electric motors
Range:	12,750 nmi (23,610 km; 14,670 mi) at 10 knots (19 km/h; 12 mph) surfaced 213 nmi (394 km; 245 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth:	230 m (750 ft)
Complement:	55 to 63
Armament:	6 × torpedo tubes (four bow, two stern) 24 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm (4.1 in) SK L/45 deck gun (150 rounds) anti-aircraft guns
Service record
Part of:	4th U-boat Flotilla 14 March - 30 September 1942 10th U-boat Flotilla 1 October - 30 November 1942 12th U-boat Flotilla 1 December 1942 - 6 February 1944
Commanders:	K.Kapt. Wilhelm Schulze 14 March 1942 - 23 March 1943 K.Kapt. Robert Gysae 24 March - 16 October 1943 K.Kapt. Heinz Buchholz 17 October 1943 - 6 February 1944
Operations:	Three: 1st patrol: 17 September 1942 - 22 January 1943 2nd patrol: 1 April - 1 October 1943 3rd patrol: 2 January - 6 February 1944
Victories:	14 commercial ships sunk (87,388 GRT) One commercial ship damaged (2,588 GRT)

German submarine U-177 was a Type IXD2 U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 25 November 1940 at the DeSchiMAG AG Weser yard in Bremen as yard number 1017. She was launched on 1 October 1941 and commissioned on 14 March 1942 under the command of Kapitänleutnant Wilhelm Schulze. After a period of training with the 4th U-boat Flotilla at Stettin, the boat was transferred to the 10th flotilla on 1 October 1942 and based at Lorient for front-line service, she was then reassigned to the 12th flotilla at Bordeaux on 1 December.

She sank 14 ships of 87,388 gross register tons (GRT) and damaged one other of 2,588 GRT, but was herself sunk in February 1944 in the Atlantic west of Ascension Island by a US Navy aircraft.

German Type IXD2 submarines were considerably larger than the original Type IXs. U-177 had a displacement of 1,610 tonnes (1,580 long tons) when at the surface and 1,799 tonnes (1,771 long tons) while submerged. The U-boat had a total length of 87.58 m (287 ft 4 in), a pressure hull length of 68.50 m (224 ft 9 in), a beam of 7.50 m (24 ft 7 in), a height of 10.20 m (33 ft 6 in), and a draught of 5.35 m (17 ft 7 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of 9,000 metric horsepower (6,620 kW; 8,880 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.85 m (6 ft) propellers. The boat was capable of operating at depths of up to 200 metres (660 ft).

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